alt Hacker NewsI've also wondered whether this entire conversation is just all of us collectively talking past each other for the entire conversation and we all in fact have quite similar experiences. The recent use of brain imaging to examine this question is sort of interesting, in that perhaps it could concretely and relatively objectively answer that question. Though my interest is somewhat diminished by the questions that have been raised around the entire premise of brain imaging as a solution to this problem, e.g., https://www.pnas.org/doi/10.1073/pnas.1602413113 (2016), https://pubmed.ncbi.nlm.nih.gov/32483374/ (2020), https://academic.oup.com/brain/article/140/8/e53/4032512 (2017).
I invite you to feed your own friendly AI these references then ask it to analyze the recent papers trying to study aphantasia and come to your own conclusions about whether they're actually doing all that much. My own suggested that while there are some improvements since the papers I cited that it is still difficult to say that they've solved the problems in those studies.
Still, directionally, while inferring from "brain activations" to qualia is a difficult path, if there was enough data to show big and consistent correlations that would tend to satisfy me that maybe there is some sort of real difference and we're not just talking past each other. It's not such a shocking claim that I need truly shocking evidence to believe it, just some support.
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> I've also wondered whether this entire conversation is just all of us collectively talking past each other for the entire conversation and we all in fact have quite similar experiences
This is fairly conclusively disproven by far more than just fMRI / brain-imaging studies. E.g. aphantasics have problem with visual memory recall, visual priming, pupil dilatory and skin conductance responses when imagining light and/or fearful stimuli, and many other results (especially acquired aphantasia) that don't depend on brain imaging and obviously rule out semantic explanations. Likewise, rejecting the reality of the phenomenon also seems to require believing an extraordinary amount of error and/or conspiracy on the part of highly educated and insightful people that explicitly are saying the issue is not one of semantics / description. This is also not to mention the rich history of visualization practices in much of the worlds religions and esoteric practices (which make basically zero sense if this is all metaphor). See e.g. the discussion in a previous HN thread (https://news.ycombinator.com/item?id=49464414).
> I invite you to feed your own friendly AI these references then ask it to analyze the recent papers [...]
Likewise, an unbiased AI prompt (or two prompts in separate sessions, with opposite biases) will clearly reveal the "semantics denialist" case has very little to stand on here. Yes, there are communication and linguistic issues, but these only cover a subset of ambiguous cases. Rejecting or denying the reality of aphantasia is an extremely strong indicator you are aphantasic, to some considerable degree.
I find these takes kinda insulting because they directly dismiss as false direct personal experience of a lot of us. I have experienced visualisation.
I know the vast chasm between the two states from direct first hand experience.
So do many others.